Roof structure



Apriljv 27 v1926.

1,582,288 P. L. MOKEE ROOF STRUCTURE Filed sept. 17, 1925 p transverse supports.

Patented Apr. 27, k1926.

UNITE-D STATES f ingrese PATE-Nr 'go-i-"r-icft;.p

PHILIP il. MQ'KEE, or CHICAGO, iLLi-Nos.

Boor STRUCTURE.

Application filed September "17,11325. Serial'No. 56,88*?.

To all whom it may concern: y

Bo it hnownthat I, PHILIP L. MCKiin,

a citizen of the United States, residing atV phere which tends to promote decay of the"v rafters and other parts of the building and contents. To retard decay, cypress or other moisture resisting wood is usually employed, but even with this precaution there is apt to be rapid decay where thewood receives screws or other fastening devices by whichV the parts of the buildings' are held together. One of the objects of my invention is to provide fastening means for holding the sash bar toits purlins, so designed as to reduce the tendencyofwater to collect or remain at the points where the fastening devices are located.

It will also be understood that according to modern practice the sash bars, purlins and other component parts of a greenhouse are factory made, with the resultthat whenthe parts come to be assembled in the field there is sometimes a slight discrepancy in dimensions, thus making it diiiicult at times to fit the parts together. One of the objects of my invention is to compensate for this and to provide fastening means so designed that ordinary inaccuracies may be absorbed and the parts may be assembled and ldrawn together without requiring any hand fitting orcutting of the parts. y v

VI accomplish my objects by the construction illustrated in the accompanying drawings in which Figure l is an assembly view showing a portion of the roof of a greenhouse including` a rafter or sash bar, a purlin, and the means which I have provided for fastening the two together. y

Figure 2 is a sectional elevation on the line 2 2 Figure l. p

Figure 3 is a plan section on the line 3-3 Figure 4. y a

Figure 4 is a sectional elevation on` the line 4-4 Figure 2, l

Figure sis a side view of amodied form of eye bolt or fastening stud.

l Like numerals denote like parts throughout the several views. f

In the form shown in the drawings the hinges 3. These hingesare fastened to and secure sash frames 4 providedwith panes 6 of glass. These elements are not'particularly I concerned with the principle of inyinvention and may be greatly vvaried in design.

The building' is provided in the usualmanvner with purlins 8 which run parallel to the v ridge pole. In the form illustrated the purlins are angle bars, the upper legsy of which are inclined at the same angle as the rafters or sash bars l0. lhave `shown a conventional design of sashbar, the samehaving shoulders l2 for supporting the stationary pane 14 of glass. They are also provided with the usual gutters 16 for carrying oft the water of condensation.

yridge pole l has a cap 2 which supports f Referring now to the partsinore intimate- Aly concerned with my invention, the sash' bar has a chamber 1S formed in theunder side and a pin 20 passes transversely through it, and through the sash bar. The pin may assume different foi'ms'butin the form il- Vlustrated is like a stove bolt, the threaded ed shank of this veye bolt or studpasses through an aperture 26 formed in the upper leg of the purlin. v A nut 28 screwsyonto the lower end of the eye bolt and serves to draw down the eye bolt toward the purlin, thus vfirmly clamping the parts together. If desired a washer 30 may be interposed between the bottom of the rafter and the top of the purlin for the purpose of draining. This holds the parts separated and prevents the water from collecting and remaining at the point where the rafter seats upon the purlin.

In practice, with the parts designed as shown and described there is little or no tendency for water to collect at the point where the sash bar is fastened to the purlin. In fact water readily drains away, thus keeping the Wood reasonably dry and retarding decay. Another advantage of this construction is that it affords considerable play, especially as it is usual to make the aperture 26 somewhat larger than the diameter of the shank of the eye bolt or stud. As a result of this construction, Whether the eye of the stud is elongated or not, the parts Will come together readily because if they do not at first come into juxtaposition the stud may be inserted at various angles through the aperture 26, after which the nut Q8 may be tightened, which will tend to draw the parts firmly together and bring them into adjusted relation.

It will be observed that the construction is simple and requires only two principal parts, viz, the cross pin 20 and the eye bolt 2a. Both oit these elements may be of standard construction and hence purchasable in the open market.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

l. In a roof structure for greenhouses and the like, a purlinj a sash bar having a chainber in the under side, a pin passing translversely through the chamber and supported in the sash bar, and a fastening element extending into said chamber and supported by the pin and engaging the purlin for holding the part-s together.

2. In a roof structure forv greenhouses and the like, a purlin, a sash bar having a chamber in the under side, a pin passing transversely through said chamber and supported in the sash bar, and a fastening element extending into said chamber' and loosely mounted on the pin and having a clamping engagement with the puilin for holding the parts together.

3. In a roof structure for greenhouses and the like, a purlin having an aperture in it, a sash bar having a chamber in the under side, a pin passing transversely through said chamber and supported in the sash bar, an eye bolt passing through the aperture in the purlin, the eye of said bolt encircling the pin Within the chamber, and means screwing on the eye bolt 'for clamping the purlin to the sash bar.

4. In a roof structure for greenhouses and the like, a purlin, a sash bar having a cham-v ber in the under side, a pin passing transversely through said chamber and supported in the sash bar, an eye bolt having an elongated eye enclosing the pin for being support-ed thereby, and means acting upon the eye boltand purlin for drawing the eye bolt and sash bar toward the purlin for holding the parts together,

5. In a root structure for greenhouses and the like, an inclined sash bar, a purlin located beneath the saine for supporting it and having the supporting surface arranged at the same angle of inclination as the sash bar, a fasteningdevice secured to the sash bar and penetrating theqiurlin, and a washer surrounding the fastening device and nterposed between the purlin and sash bar for spacing them apart and promoting drainage.

In Witness whereof, I have hereunto subscribedvmy name.

PHILIP L. MGKEE. 

